Frederick j



F. J. SCHROEDER.

METHOD 0F FORGING BRAKE FULCRUMS.

APPLICATIQN FILED JUNE 8,1915.

1 l 93,928 Patented Aug'. 8, 1916.

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FREDERICK J. SCHROEDER, OF CLEVELAND, OHIO, ASSIGNOR, BY FIESNE ASSIGNMENTS, TO THE DAMASCUS BRAKE BEAM COIi/IPANY, OF CLEVELAND, OHIO, A CORPORATION 0F OHIO, (INCORPORATED FEBRUARY 25, 1916.)

IVIETI-IOD OF FORGING BRAKE-FULCRUIVIS.

Application filed June 8, 1915.

To all whom t may concern.'

Be it known that I, FREDERICK J. Sermon- Dnn, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Methods of Forging Brake-Fulcrums, of which the following is a specification.

The present invention relates to improvements in the forging of brake fulcrums and the object of the invention is to produce such fulcrums in one piece instead of the usual two piece fulcrums. Ordinarily they consist of two shanks which are bolted or riveted together at both ends and receive between them the brake lever.

The advantage of the present invention over the prior art is now that the fulcrunis produced thereby are very strong and solid and are simple to manufacture.

In the accompanying drawing the diEerent steps of the method have been illustrated and Figure 1 shows a plan view of a blank for the fulcrum after the first step of the method; Fig. 2, a cross section on the line 2 2 of Fig. 1; Fig. 3, an elevation of Fig. 1; Fig. 4 is an elevation of the blank after the second step; Fig. 5, a plan view of the same blank after the third step; Fig. 6, an elevation of Fig. 5; Fig. 7, a cross section along line 7 7 of Fig. 5, and Fig. 8 the finished fulcrum after the fourth step of the method.

A straight bar 10 of rectangular cross section after having been brought to welding heat is placed under a die and impressed with the V-shaped grooves 11 having straight inner edges and inclined outer edges. This is done for the purpose of forming the square or rectangular block 12 in the middle of the bar, set diagonally on the bar, or in other words, with two of its corners in approximate alinement with the longitudinal direction of the bar, and leaving enough metal at the bottom corresponding approximately to the thickness of the shanks 13. While still hot the two ends formed on each side of the central block 14 are now drawn or pressed out until the desired thiclmess of the shanks 13, see Fig. 4, is obtained, leaving the central block 14 Specification of Letters Patent.

Patented A110'. 8, 1916.

Serial No. 32,946.

projecting upward from the level of the shanks 13.

The third step in the method consists in pressing the diagonal block 14 in order to obtain the concave recess 15, see Figs. 5, 6 and 7, and the last step in the process is now to bend back the two shanks 18 until they are parallel, extending downwardly from the block or head 16 and approximately in alinement with the two outer corners of the head. This is shown in Fig. 8 where shanks 17 run down parallel below the head 16 and form a space 18 between them. Subsequently, the straight ends of shank 17 may now be bent or twisted to any desired shape, but there is no necessity of bolting or riveting them together at the place where the greatest strain is applied, namely, on the head 16.

I claim 1. The method of forging brake fulcruins consisting in impressing a pair of grooves in positions on a bar which leave a central head between the grooves; second, in forging out to the desired thinness the metal of the bar which extends from the grooves outward toward the ends and which lies on the saine side of the bar as the central head', also making a truss-member seat in said central head and in turning back the two reduced shanks until they lie beneath the head.

2. The method of forging brake fulcrums consisting in impressing a pair of grooves on a. bar, in positions which leave a central head on one side of the bar between said grooves; then forging out to the desired thinness the metal on thel saine side of the bar as the head and extending from the grooves endwise of the bar, and thereby forming reduced shanks in the plane of the lower side of the head; making a truss-member seat diagonally of the bar, in said central head, and turning back the two reduced shanks until they lie axially beneath the ends of the truss-member seat in the head.

3. The method of forging brake fulcrums consisting in impressing a pair of angular grooves on one face of the bar in positions which leave between the grooves, a parallel sided head having two of its corners in approximate alinement with the longitudinal axis of the bar and the other two corners transversely thereto, reducing the metal on the same side of the bar with the head, from the grooves toward the ends, making a tension member seat, between two sides of the head and diagonally of the bar, and finally in turning back the two Shanks in the dreotion away from the reduced side until they lie beneath said lirst named corners of l0 the head with a space between them, and with the head bridging said space.

The foregoing specification signed at Cleveland, Ohio, this 13th day of May, 1915.

FREDERICK J. SCHROEDER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

` Washington, D. C. 

